diff --git a/cachix/nixpkgs-unfree.nix b/cachix/nixpkgs-unfree.nix
new file mode 100644
index 0000000..eaad22e
--- /dev/null
+++ b/cachix/nixpkgs-unfree.nix
@@ -0,0 +1,13 @@
+
+{
+  nix = {
+    settings = {
+      substituters = [
+        "https://nixpkgs-unfree.cachix.org"
+      ];
+      trusted-public-keys = [
+        "nixpkgs-unfree.cachix.org-1:hqvoInulhbV4nJ9yJOEr+4wxhDV4xq2d1DK7S6Nj6rs="
+      ];
+    };
+  };
+}